Benchmark: forEach vs reduce vs map vs filter vs for eac2!1!

Script Preparation code:

var arr = [];
for (var i = 0; i < 12345; i++) {
  arr[i] = i;
}

function someFn(i) {
  return (i * 3 * 8 / 1200 * 0.002 / 40 * 0.2);
}

var sumForEach = 0,
  sumReduce = 0,
  sumMap = 0,
  sumFilter = 0,
  sumFor = 0;

Tests:

forEach
arr.forEach(item => sumForEach += someFn(item));
reduce
sumReduce = arr.reduce((lastValue, item) => { return sumReduce += someFn(item); });
map
arr.map(item => (sumMap += someFn(item)));
filter
arr.filter(item => (sumFilter += someFn(item)));
for
for (var j of arr) { sumFor += someFn(j); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
forEach
reduce
map
filter
for

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser/OS: Chrome 109 on Windows

View result in a separate tab

reduce

286/s

map

284/s

forEach

284/s

for

276/s

filter

259/s

View exact numbers

Test name	Executions per second
✓ reduce	286 Ops/sec
map	284 Ops/sec
forEach	284 Ops/sec
for	276 Ops/sec
filter	259 Ops/sec

forEach vs reduce vs map vs filter vs for eac2!1! (version: 0) Benchmark.js

Comparing performance of: `forEach vs reduce vs map vs filter vs for`

Created: 2 years ago by: Guest

Go to the latest result

forEach

reduce

map

filter

for

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

forEach vs reduce vs map vs filter vs for eac2!1! (version: 0) Benchmark.js

Comparing performance of: forEach vs reduce vs map vs filter vs for

Created: 2 years ago by: Guest

Go to the latest result

forEach

reduce

map

filter

for

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `forEach vs reduce vs map vs filter vs for`